EP2003486A4 - FOUR-STAGE PHASE DIFFERENTIAL DISPLACEMENT MODULATOR AND METHOD OF CONTROLLING ITS PHASE DISPLACEMENT QUANTITY - Google Patents

FOUR-STAGE PHASE DIFFERENTIAL DISPLACEMENT MODULATOR AND METHOD OF CONTROLLING ITS PHASE DISPLACEMENT QUANTITY

Info

Publication number
EP2003486A4
EP2003486A4 EP06730818A EP06730818A EP2003486A4 EP 2003486 A4 EP2003486 A4 EP 2003486A4 EP 06730818 A EP06730818 A EP 06730818A EP 06730818 A EP06730818 A EP 06730818A EP 2003486 A4 EP2003486 A4 EP 2003486A4
Authority
EP
European Patent Office
Prior art keywords
phase shift
differential
modulator
controlling
shift amount
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06730818A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2003486A2 (en
EP2003486A9 (en
Inventor
Takafumi Terahara
Takeshi Hoshida
Kentaro Nakamura
Yuichi Akiyama
Hiroki Ooi
C Rasmussen Jens
Akira Miura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of EP2003486A2 publication Critical patent/EP2003486A2/en
Publication of EP2003486A9 publication Critical patent/EP2003486A9/en
Publication of EP2003486A4 publication Critical patent/EP2003486A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5053—Laser transmitters using external modulation using a parallel, i.e. shunt, combination of modulators
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0121—Operation of devices; Circuit arrangements, not otherwise provided for in this subclass
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/503—Laser transmitters
    • H04B10/505—Laser transmitters using external modulation
    • H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
    • H04B10/50577—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the phase of the modulating signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50—Transmitters
    • H04B10/516—Details of coding or modulation
    • H04B10/548—Phase or frequency modulation
    • H04B10/556—Digital modulation, e.g. differential phase shift keying [DPSK] or frequency shift keying [FSK]
    • H04B10/5561—Digital phase modulation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G02F1/212—Mach-Zehnder type
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/58—Arrangements comprising a monitoring photodetector
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/21—Thermal instability, i.e. DC drift, of an optical modulator; Arrangements or methods for the reduction thereof

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Communication System (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
EP06730818A 2006-03-31 2006-03-31 FOUR-STAGE PHASE DIFFERENTIAL DISPLACEMENT MODULATOR AND METHOD OF CONTROLLING ITS PHASE DISPLACEMENT QUANTITY Withdrawn EP2003486A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/306870 WO2007116475A1 (ja) 2006-03-31 2006-03-31 差動４位相偏移変調器およびその位相シフト量制御方法

Publications (3)

Publication Number Publication Date
EP2003486A2 EP2003486A2 (en) 2008-12-17
EP2003486A9 EP2003486A9 (en) 2009-04-08
EP2003486A4 true EP2003486A4 (en) 2010-11-24

Family

ID=38580784

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06730818A Withdrawn EP2003486A4 (en) 2006-03-31 2006-03-31 FOUR-STAGE PHASE DIFFERENTIAL DISPLACEMENT MODULATOR AND METHOD OF CONTROLLING ITS PHASE DISPLACEMENT QUANTITY

Country Status (4)

Country Link
US (1) US7603007B2 (ja)
EP (1) EP2003486A4 (ja)
JP (1) JP5287239B2 (ja)
WO (1) WO2007116475A1 (ja)

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US7860402B2 (en) * 2007-01-26 2010-12-28 Fujitsu Limited Modulating a signal according to 2n-PSK modulation
JP5101131B2 (ja) * 2007-02-23 2012-12-19 住友電工デバイス・イノベーション株式会社 電子回路
JP4946833B2 (ja) * 2007-11-30 2012-06-06 富士通オプティカルコンポーネンツ株式会社 光変調装置
US8385749B2 (en) * 2009-07-02 2013-02-26 International Business Machines Corporation High speed optical transmitter with directly modulated laser source
JP5161370B2 (ja) * 2009-07-10 2013-03-13 日本電信電話株式会社 光変調器
JP5390972B2 (ja) * 2009-07-16 2014-01-15 古河電気工業株式会社 光位相変調器および光位相変調装置
JP5387393B2 (ja) * 2009-12-25 2014-01-15 富士通株式会社 光ハイブリッド回路、光受信機及び光受信方法
CN101800602B (zh) * 2010-03-16 2014-01-01 中兴通讯股份有限公司 Dqpsk解调器偏置点控制方法及装置
US20110229149A1 (en) * 2010-03-22 2011-09-22 Infinera Corporation Optical transmitter supplying optical signals having multiple modulation formats
US9621274B2 (en) * 2010-04-08 2017-04-11 Infinera Corporation Optical communication system
CN101909029B (zh) * 2010-07-14 2015-01-28 中兴通讯股份有限公司 Dqpsk调制器偏置点的控制方法和系统
JP5853386B2 (ja) * 2010-12-16 2016-02-09 富士通オプティカルコンポーネンツ株式会社 光変調装置および光変調制御方法
US8760752B2 (en) * 2011-03-07 2014-06-24 Alcatel Lucent Tunable optical frequency comb generator
US9116368B2 (en) * 2011-08-22 2015-08-25 Nippon Telegraph And Telephone Corporation Optical modulation device and bias voltage control method
EP2745434A1 (en) * 2011-10-19 2014-06-25 Telefonaktiebolaget LM Ericsson (PUBL) Optical modulator and method of encoding communications traffic in a multilevel modulation format
US9300406B2 (en) 2012-08-06 2016-03-29 Skorpios Technologies, Inc. Method and system for the monolithic integration of circuits for monitoring and control of RF signals
US9749057B2 (en) * 2012-12-28 2017-08-29 Juniper Networks, Inc. Detection and alignment of XY skew
JP6123392B2 (ja) * 2013-03-15 2017-05-10 富士通株式会社 測定装置、測定方法および伝送装置
EP2782270A1 (en) 2013-03-20 2014-09-24 Xieon Networks S.à.r.l. Optical IQ modulator control
JP6627640B2 (ja) * 2016-05-16 2020-01-08 富士通株式会社 光送信機
US9998232B2 (en) 2016-09-13 2018-06-12 Juniper Networks, Inc. Detection and compensation of power imbalances for a transmitter
US10509243B2 (en) 2017-03-15 2019-12-17 Elenion Technologies, Llc Bias control of optical modulators
US10509295B2 (en) 2017-03-15 2019-12-17 Elenion Technologies, Llc Bias control of optical modulators
US10536221B2 (en) * 2018-06-14 2020-01-14 Juniper Networks, Inc. Methods and apparatus for detecting and compensating bandwidth limitation and modulation nonlinearity of a coherent optical transponder
JP7196682B2 (ja) * 2019-02-25 2022-12-27 住友電気工業株式会社 光送信器及び光送信器の制御方法
US10742324B1 (en) 2019-05-21 2020-08-11 Elenion Technologies, Llc Bias control of optical modulators
US11209675B1 (en) * 2020-07-02 2021-12-28 The United States Of America As Represented By The Secretary Of The Navy Isolated photonic transmitter and detector
CN113867069B (zh) * 2021-09-30 2023-06-09 烽火通信科技股份有限公司 一种光学调制装置及调制方法
CN114826399B (zh) * 2022-05-03 2023-09-12 浙江大学湖州研究院 一种基于部分相干光的圆偏振移位键控光通信系统

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049333A1 (en) * 2001-11-30 2003-06-12 Bookham Technology Plc Modulation control

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GB2370473B (en) 2000-12-21 2004-04-07 Marconi Caswell Ltd Improvements in or relating to optical communication
US6924894B2 (en) * 2002-10-28 2005-08-02 The Boeing Company Temperature compensated interferometer
JP4083657B2 (ja) 2003-03-28 2008-04-30 住友大阪セメント株式会社 光変調器のバイアス制御方法及びその装置
US7511662B2 (en) * 2006-04-28 2009-03-31 Loctronix Corporation System and method for positioning in configured environments

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003049333A1 (en) * 2001-11-30 2003-06-12 Bookham Technology Plc Modulation control

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GRIFFIN R A ET AL: "10 Gb/s optical differential quadrature phase shift key (DQPSK) transmission using GaAs/AlGaAs integration", OPTICAL FIBER COMMUNICATIONS CONFERENCE. (OFC). POSTCONFERENCE TECHNICAL DIGEST. POSTDEADLINE PAPERS (IEEE CAT. NO.02CH37339) OPT SOC. AMERICA WASHINGTON, DC, USA; [TRENDS IN OPTICS AND PHOTONICS SERIES. (TOPS)],, vol. TOPS. VOL. 70, 17 March 2002 (2002-03-17), pages 917 - 919, XP010618176, ISBN: 978-1-55752-701-1 *
See also references of WO2007116475A1 *

Also Published As

Publication number Publication date
EP2003486A2 (en) 2008-12-17
JPWO2007116475A1 (ja) 2009-08-20
JP5287239B2 (ja) 2013-09-11
EP2003486A9 (en) 2009-04-08
WO2007116475A1 (ja) 2007-10-18
US7603007B2 (en) 2009-10-13
US20090047028A1 (en) 2009-02-19

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